Detachable valve stem



NOV- 25 J. A. CARR I DETACHABLE VALVE STEM Filed Aug. 24. 1921 Patented Nov, 25, 19.24.

1,5I6tm JOHN A. CARE, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO MARTIN IRON VV'ORKS, OF LOS ANGELES, CALIFORNIA.

DETACHABLE VALVE STEM.

Application filed August 24, 1921.

To all whom it may concern-.-

Be it known that I, JOHN A. CARR, a citizen of the United States, residing in the city and county of Los Angeles and State 5 of California, have invented certain new and useful Improvements in Detachable Valve Stems, of which the following is a specification.

My invention has for its principal object 10 to provide a simple and eflicient means for detachably securing a valve stem to a base, whereby said stem will be rigidly held in place and will stand longitudinal pull away from said base, thus making it possible to use a valve stem or element made of one material, such as brass, and a base of another material, such as cast iron. The de vice is particularly adapted for use in irrigation valves where it is desired to have certain parts which will not rust and which can be interchanged or replaced by new parts, and where it is also desired to have other parts of cast iron, thus greatly reducing the cost of material and labor in the manufacture of the article without decreasing its efficiency.

I have illustrated my improved device on the accompanying sheet of drawings in,

which,-

Figure 1 is a sectional view through the base of an irrigation valve, showing my improved detachable valve stem in place; and

Figure 2 is a top plan view of the entire base and valve stem.

In the drawings, 1 designates a base member, having a cross supporting arm, 2, the enlarged middle portion of which is provided with a recess 3, with a restricted top opening, the opposite sides of which recess are open. A valve stem, 4, having a head,

4*, conforming to said recess, is adapted to be inserted sideways into said recess, as shown. In order to secure said stem head in place, a small bolt, 5, is inserted through Serial No. 495,063.

the recess, between the lower end of the head and the bottom of the recess, and to this end the bottom of said recess is provided with an enlargement and the bottom of the head is provided with a corresponding transverse groove or recess, making it possible to insert said small bolt through the same, in the manner clearly indicated.

Thus I have provided a simple and yet effective means for quickly and easily interlooking a valve stem head with a cast body, with means for securing it in place against lateral movement. I am aware that other simple means can be provided for holding said stem in place in its seat without departing from the spirit of my invention, and I do not, therefore, limit my invention to the details here shown for illustrative purposes, except as I may be limited by the hereto appended claim.

I claim:

In a device of the character shown and described a ring-like base member with a cross member from one side to the other, said cross member dipping in its middle portion and having a recess in its upper edge of substantially inverted T-form, a valvestem having a T-shaped head and being of substantially the same thickness of said cross member and adapted to have its head inserted sidewise into said recess from either side thereof, and a bolt member inserted through said recess between the bottom of the recess and the bottom end of the stem, said bolt having means at its opposite ends to prevent said stem from being moved out of place while the bolt member is in place.

Signed at Los Angeles, California, this 18th day of August, 1921.

, JOHN A. CARR. In presence of:

W. R. LITZENBERG,

LEONORA HARPER.

Civ 

